| // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/process/process_metrics.h" |
| |
| #include <mach/task.h> |
| |
| namespace base { |
| |
| namespace { |
| |
| bool GetTaskInfo(task_basic_info_64* task_info_data) { |
| mach_msg_type_number_t count = TASK_BASIC_INFO_64_COUNT; |
| kern_return_t kr = task_info(mach_task_self(), |
| TASK_BASIC_INFO_64, |
| reinterpret_cast<task_info_t>(task_info_data), |
| &count); |
| return kr == KERN_SUCCESS; |
| } |
| |
| } // namespace |
| |
| ProcessMetrics::ProcessMetrics(ProcessHandle process) {} |
| |
| ProcessMetrics::~ProcessMetrics() {} |
| |
| // static |
| ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) { |
| return new ProcessMetrics(process); |
| } |
| |
| size_t ProcessMetrics::GetPagefileUsage() const { |
| task_basic_info_64 task_info_data; |
| if (!GetTaskInfo(&task_info_data)) |
| return 0; |
| return task_info_data.virtual_size; |
| } |
| |
| size_t ProcessMetrics::GetWorkingSetSize() const { |
| task_basic_info_64 task_info_data; |
| if (!GetTaskInfo(&task_info_data)) |
| return 0; |
| return task_info_data.resident_size; |
| } |
| |
| size_t GetMaxFds() { |
| static const rlim_t kSystemDefaultMaxFds = 256; |
| rlim_t max_fds; |
| struct rlimit nofile; |
| if (getrlimit(RLIMIT_NOFILE, &nofile)) { |
| // Error case: Take a best guess. |
| max_fds = kSystemDefaultMaxFds; |
| } else { |
| max_fds = nofile.rlim_cur; |
| } |
| |
| if (max_fds > INT_MAX) |
| max_fds = INT_MAX; |
| |
| return static_cast<size_t>(max_fds); |
| } |
| |
| void SetFdLimit(unsigned int max_descriptors) { |
| // Unimplemented. |
| } |
| |
| size_t GetPageSize() { |
| return getpagesize(); |
| } |
| |
| } // namespace base |